Process of producing oil films



Patented Feb. 7, 1 ?50 fl? UNITED STATES PATENT OFFICE rnocnss F PRODUCING on. FILMS John Vallerie, Ncrwalk, Conn.

No Drawing. Original application March 13, 1942, Serial No. 434,538. Divided and this application July 22, 1944, Serial No. 546,219

This invention relates to the process of providing an oil film on surfaces as required and particularly on th interior surfaces of chambers, passages or other parts of internal combustion engines and the like.

The present application is a division of my copending application Serial No. 434,538, filed March 13, 1942, now Patent No. 2,366,073, granted December 26, 1944. In this patent, .I ,l1a.'ve described and claimed the method anda'pparatus for cleaning the interior of an internal combustion engine without disassembling the. engine. This cleaning is done by forcing a vaporized solvent under pressure into the intake manifold or pressure oil-distributing system and oil gallery or the like,while turning the engine over by an outside source of power. If desired, a suction is applied to the interior of the engine to draw th vapor through the passages therein.

Because of the thoroughness of this cleaning operation, which penetrates and removes the lubricant as well as the foreign deposits therein, it is highly important that an oil film be restored to the bearings and other surfaces before the engine is started and operated under its own power. This oil film is provided by th method of the present invention wherein a plating oil is forcibly injected as an atomized vapor or fog intothe interior of the engin and, preferably, suction is applied to the interior of the engine at a point remote fromthe point of injection to draw the vapor or fog through the engine and thus insure penetration of the platin oil into the bearings, oil lines and crevices from which the oil had been removed and into engagement with the parts which have been cleaned or which for some reason requir an oil film to be placed thereon.

A feature of the invention resides in the fact that the oil plating or film forming operation may be carried out On the engine without taking it down or dismantling it.

The plating oil is of such a character that it is susceptible to being vaporized or atomized and formed into an oil vapor or fog and should be of such consistency that it will stick to the surfaces to which the film is to be applied.

Any suitable atomizer may be used to atomize the plating oil. The atomized spray may be injected directly into the passages of the engine. However, under some circumstances it may be more desirable to form the plating oil into a dense vapor fog before injecting it into the motor. This vapor fog may be produced by atomizing th plating oil into an expansion chamber of f: Qlaims. (Cl. 123-196) substantial length. In the expansion chamber the atomized spray loses some of its velocity and forms thick dense clouds of plating oil vapor or fog which r011 from the expansion chamber and are injected into the passages being plated and insure that a film of plating oil will be deposited onall parts within the passage.

Preferably, the injection is done while the engine is cold since the clearances normallyleft in the engine to compensate for expansion, permit the plating oil spray or fog to pass therethrough. However, if the engine is worn it may be plated while warm since the wear in the engine will be sufi'icient to provide clearancesfor the passage of the oil.

When the vapor is injected into th engine, it is preferable that the engine be turned over by hand or by an outside source of power in order that all of the parts of the motor will be subjected to the atomized oil or fo without firing the engine and breaking down any of the oil.

In order to secure a maximum penetration of the atomized oil spray or fog, a suction is applied to the chamber or the passage being provided with an oil film at a point remote from the point of injection of the oil so that the atomized oil is not only pushed but is also drawn through the passages. This keeps the spray or fog moving to carry it to all parts throughout the extent of the passage as required.

In order that the process will be more readily understood, an example will be given. The eng'ine has been thoroughly cleaned by the process and apparatus of my parent application and has been blown dry. The plating oil in the atomized spray or fog form is injected into the intake manifold and into the chamber above the pistons. The engine, during this operation, is turned over by an outside source of power. At the same time, a suction is provided below the piston for drawing the oil vapor or fog past the piston and along the cylinder walls and associated elements. A source of suction may be connected, for example, to the oil pressure galleries which connect to the connecting rod bearlugs and provide the reduced pressure below the piston for drawing the oil past the same. Further, the oil may be injected into the oil gallery of the pressure-oil-distributing system and through the oil lines to the various bearings.

In the broader aspects of the invention, by suitably connecting the injection and suction means to the various parts of the engine to provide for the push-pull action, the other cham- 3 bers or passages within the engine may be coated with an oil film.

While the present invitation has been described in connection with an internal combustion engine, it is to be understood that the process may be used with other types of engines or devices similar thereto having inaccessible chambers or passages requiring a film of oil thereon.

Variations and modifications may be made within the scope of this invention and portions of the improvements may be used without others.

1. The process of providing an oil film on interior surfaces of an internal combustion engine prior to firing the same comprising the steps of atcmizing plating oil; injecting'said oil. under pressure, into the interior of the engine; apply.- ing a suction directly to an interior passage of the engine at a point remote from the point of injection and drawing said atomized oil through the passages of the engine; and turning said engine over a plurality of times by an outside source of power.

2. The process of providing an oil film on interior surfaces of an internal combustion engine prior to firing the same comprising the steps of forming an atomized vapor of plating oil; inject ing said vapor under pressure directly-into the interior passages of the engine; connecting a suction producing means toand applying a suction at the other end of the passage to draw the vapor therethrough; and turning said engine over a plurality of times by an outside source of power.

3. The process of providing an oil film on interior surfaces of an internal combustion engine prior to firing said engine comprising the steps of atomizing a plating oil; forming a vapor of the atomized plating oil; injecting said vapor under pressure into the interior passages of the engine; applying a suction at the other end of the passage to draw the vapor therethrough; and simultaneously turning the engine over through several cycles by an outside source of power.

4. The process of providing an oil film on in.- terior surfaces of an internal combustion engine prior to firing the same comprising the steps of forming an atomized vapor of plating oil; injecting said vapor under pressure into the space above the pistons of the engine; applying a suction below said pistons to draw the injected vapor around the pistons and along the. cylinders therefor; and turning said engine over a plurality'of times by an outside souroe'of power.

5. The process of providing an oil film on interior surfaces of an internal combustion engine prior to firing the same comprising the steps of atomizing a plating oil; forming a fog of the atomized plating oil; injecting said fog into the interior of the engine; connecting an outside source of suction to said engine at a point remote from, the point oi injection and drawing said fog through the engine; and turning said engine over a plurality of times by an outside source of power.

- 6 .'The process of providing an oil film on cool surfaces within a chamber comprising the steps of atomizing a plating oil outside of the chamber;- .injec ting said oil under pressure into the chamber; simultaneously applying a suction from anoutside sourcetothe chamber remote from the point of injection to draw the oil through the chamber; and continuing the injection of the oil and application ofsuction until said surfaces are plated with oil whilemaintaining said surfaces cool.

7. The process of providing an oil film on cool surfaces within a chamber comprising the steps of forming a fog of plating oil outside of said chamber; introducing said fog into the chamber; simultaneously applying ai-suction from Ian-outside source to the chamber at a point remote from the point of introduction to draw theoil fog through the chamberand "into contact with the surfaces thereof;-' and co'ntinuing the'inje'ction of the oil and application of suction until said surfaces are plated withoil while-maintaining said surfaces cool.-

- r 5 JOHN VALLERI'E.

REFERENCES CITED The following references file of-thispatent': I

are of record-in the UNITED s'rA'rns PA'rEN rs Number Name Date 2,033,992 Moller Mar. 17, 1936 2,042,575 W'orth June 2, 1936 2,110,662 Fisher Mar. 8, 1938 2,334,942 Malone Nov. 23, 1943 FOREIGN PATENTS Number v Country I Date 165,255 Great Britain June 30, 1921 105,560 Switzerland J uly 1, 1924 287,417 --Gr eat Britain Mar, 22, 1928 

